User's Manual
System Description 1-2
DataNex EMS Wireless, DATA-20 Digital Radio
Auto / Manual Power Control of up to 20 dB
Built-in Auto Pin Diode Attenuator for powerful signals
Accurate Digital Filtering for adjacent channel rejection
386 Processor-based controller
Extensive LCD screen status monitoring
Built-in BER Meter
Built-in NMS
Monitoring & Time Stamping
Monitor up to 4 external Analog & Digital I/O
Readout of RSL in dBm
Completely modular
1.3 Typical Configurations
1.3.1 Data Rate and Interface
Table 1-1 provides basic data channel capabilities for the DATA-20. See Section 2 (Installation)
for more detailed information.
Table 1-1.DATA-20 Data Channel Configurations
Data Rate MUX Hardware Channels Interface(s)
1.5 Mbps-8 Mbps 2 or 4 x E1/T1 2 or 4 G.703, E1/T1
512 kbps-2 Mbps QAM Modem 1 Fractional E1/T1
512 kbps-2 Mbps QAM Modem 1 V35, RS449
1.3.2 Standalone Operation
The DATA-20 may be used as a standalone digital radio with an interface in the modem or with a
Multiplexer with 2 or 4 E1/T1 interfaces. The Multiplexer has an overhead channel which can be
utilized by the customer